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Weather in Poznań for September 2026

Your guide to Poznań weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Poznań is cooler than usual, with temperatures averaging 20.6 °C, this is 3 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Poznań with the forecast suggesting a temperature of 20.2 °C, lower than the historical average.

  • In general, the average temperature in Poznań at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °C by the end of September.

    • Rain 🌧️

  • The climate of Poznań in September is notably wet, with an average of 11 rainy days, and a total of 28.4 mm of precipitation.

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/13°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
59 %
Avg humidity

Poznań Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
23°
2
Overcast
24°
3
Overcast
26°
4
Sunny
26°
5
Sunny
26°
6
Sunny
22°
7
Sunny
25°
8
Sunny
28°
9
Partly cloudy
26°
10
Sunny
23°
11
Overcast
21°
12
Partly cloudy
22°
13
Thundery outbreaks possible
19°
14
Partly cloudy
19°
15
Sunny
20°
16
Overcast
25°
17
Overcast
20°
18
Overcast
22°
19
Overcast
23°
20
Sunny
18°
21
Patchy rain possible
15°
22
Sunny
18°
23
Sunny
19°
24
Sunny
21°
25
Sunny
21°
26
Mist
19°
27
Sunny
21°
28
Overcast
23°
29
Overcast
18°
30
Patchy rain possible
15°

Temperatures trend during September in Poznań

See the weather trend as well as the moving average line

September weather in Poznań day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 23° /13° 1.9 mm 5
2 Sept. Overcast
Overcast
 24° /13° 0 mm 5
3 Sept. Overcast
Overcast
 26° /15° 0.1 mm 5
4 Sept. Sunny
Sunny
 26° /15° 2.3 mm 5
5 Sept. Sunny
Sunny
 26° /16° 1.1 mm 6
6 Sept. Sunny
Sunny
 22° /14° 2 mm 6
7 Sept. Sunny
Sunny
 25° /14° 0 mm 6
8 Sept. Sunny
Sunny
 28° /16° 2 mm 6
9 Sept. Partly cloudy
Partly cloudy
 26° /15° 0.4 mm 6
10 Sept. Sunny
Sunny
 23° /14° 0.4 mm 6
11 Sept. Overcast
Overcast
 21° /13° 3.6 mm 4
12 Sept. Partly cloudy
Partly cloudy
 22° /13° 0.9 mm 5
13 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 19° /11° 4.5 mm 4
14 Sept. Partly cloudy
Partly cloudy
 19° /11° 2 mm 4
15 Sept. Sunny
Sunny
 20° /12° 1.1 mm 5
16 Sept. Overcast
Overcast
 25° /15° 3.5 mm 2.7
17 Sept. Overcast
Overcast
 20° /12° 0 mm 3.4
18 Sept. Overcast
Overcast
 22° /14° 0 mm 3.6
19 Sept. Overcast
Overcast
 23° /13° 0 mm 3.6
20 Sept. Sunny
Sunny
 18° /12° 2.7 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 0.2 mm 4
22 Sept. Sunny
Sunny
 18° /9° 0 mm 5
23 Sept. Sunny
Sunny
 19° /9° 0 mm 5
24 Sept. Sunny
Sunny
 21° /11° 0 mm 6
25 Sept. Sunny
Sunny
 21° /13° 3.3 mm 6
26 Sept. Mist
Mist
 19° /12° 0 mm 5
27 Sept. Sunny
Sunny
 21° /12° 0 mm 6
28 Sept. Overcast
Overcast
 23° /12° 0 mm 5
29 Sept. Overcast
Overcast
 18° /13° 0.7 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 0.4 mm 4
Next
Important Notice
Our weather forecast for Poznań in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Poznań forecast closer to your planned date for the most up-to-date weather information.
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Poznań in September - FAQ

What are the expected maximum and minimum temperatures in Poznań during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Poznań during September?
In September, Poznań can expect light to moderate rainfall, totaling 28.4 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Poznań during September?
The average wind speed in Poznań during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Poznań

Explore the daily rainfall trends and prepare for Poznańs September weather 💧
Typically, Poznań has 11 rainy days in September with a total of 28.4 mm of rainfall.

UV exposure in Poznań during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Poznań, located at latitude 52.407 and longitude 16.93. Stay updated with localized weather information tailored for Poznań.

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